1) Carbohydrates a) provide energy b) are used for growth and repair. 2) lipids a) keep you warm. b) are used for growth and repair. 3) Proteins a) are used for growth and repair b) provide energy 4) Proteins are broken down into a) fatty acids and glycerol b) simple sugars c) amino acids 5) Lipids are broken down into a) amino acids b) fatty acids and glycerol c) simple sugars 6) When you add iodine to starch the colour change is a) blue to orange-red. b) blue to purple. c) orange-yellow to dark blue-black. 7) Benedict's solution tests for a) starch b) glucose c) protein 8) Copper sulphate and sodium hydroxide test for a) protein b) lipid c) carbohydrate 9) Starvation occurs when a) you do not eat enough food for a significant period of time. b) you do not drink enough water. 10) A vitamin A deficiency results in the disease called a) rickets b) scurvy c) night blindness 11) A vitamin D deficiency results in the disease called a) night blindness b) rickets c) liver cirrhosis 12) Villi line this organ and help in the absorption of nutrients. a) large intestine b) small intestine c) liver 13) Bacteria produce vitamin K in the a) small intestine b) stomach c) large intestine d) bladder 14) Lipids are broken down by the enzyme a) lipase b) carbohydrase c) protease 15) Carbohydrates are broken down by the enzyme a) lipase b) protease c) carbohydrase 16) proteins are broken down by the enzyme a) protease b) lipase c) carbohydrase 17) Enzymes are biological catalysts. This means a) they contain acid to break down molecules. b) they speed up digestion without being used up. c) they slow down reactions. 18) Recreational drugs a) are taken to treat diseases. b) are taken for fun. 19) Cocaine is a) a legal drug. b) an illegal drug. 20) Drug addiction is when a) a person suffers from withdrawal symptoms. b) a person takes a drug. c) the body gets used to the changes caused by a drug. 21) A pregnant woman who drinks alcohol may have a child which is a) born dead (stillborn). b) heavier than normal. c) longer than normal. 22) The addictive drug in tobacco is a) tar b) nicotine c) carbon monoxide

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